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  • Title: Determination of free and esterified cholesterol by a kinetic method. I. The introduction of the enzymatic method with 2,2'-azino-di-3[ethyl-benzthiazolin sulfonic acid (6)] (ABTS).
    Author: Majkić N, Berkes I.
    Journal: Clin Chim Acta; 1977 Oct 01; 80(1):121-31. PubMed ID: 20250.
    Abstract:
    A new, simple kinetic method is described for the determination of serum cholesterol based on the oxidation of 2,2'-azino-di-3[ethyl-benzthiazolin sulfonic acid (6)] (ABTS) by use of a single aqueous reagent. This assay procedure is rapid, specific, reproducible and applicable to the measurement of free and esterified cholesterol in a continuous procedure. The method requires no prior treatment of sample and linear kinetics are obtained up to 13 mmol/l cholesterol. The use of ABTS permits the direct calculation of cholesterol concentrations from absorbance changes at 410 nm (A = epsilon - c - d).
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